This may mean that Mueller's investigation is going to come to an end soon absolving POTUS of any wrongdoing. This is a good sign.
Pretty sure Q meant the inventors of the Iridium constellation… though I can't find whether they are alive or dead.. but there were JUST 3 Engineers.
There were three inventors of the Iridium constellation who worked for Motorola… still no dice trying to find any modern evidence of them being alive or dead.